缩放滚动视图的图像

Question

我正试图在水平滚动视图中包含缩放。这个想法是，用户触摸他想要突出显示的图像中的屏幕，并且该图像比其他图像稍大。我制作了Horizo​​ntall ScrollView，但是我遇到了OnClick事件。有什么更好的方法来做到这一点？

这是我在MainActivity.java

public class Carrusel extends Activity implements OnClickListener { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    // TODO Auto-generated method stub 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.iniciar); 


    {int[] images = new int[] { R.drawable.image1, R.drawable.image2, 
           R.drawable.image3, R.drawable.image4, 
           R.drawable.image5 }; 
    LinearLayout sv = (LinearLayout) findViewById (R.id.carrusel); 
    for (int i=0 ; i<5; i++){ 
     ImageView iv = new ImageView (this); 
     iv.setBackgroundResource (images[i]); 
     sv.addView(iv); 

    } 
    } 
} 

    @Override 
    public void onClick(View v) { 

     switch (v.getId()) { 
     case R.drawable.image1: 
      //I don´t know what to put here 
     break; 
     } 


    } 
    } 

这里是我在德main_activity.xml

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:layout_gravity="center" 
android:background="@color/black" > 

<HorizontalScrollView 
android:layout_width="match_parent" 
android:layout_height="wrap_content" 
android:padding="10dp" 
    > 

<LinearLayout 
    android:id="@+id/carrusel"   
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" > 
    </LinearLayout> 

</HorizontalScrollView> 

    </RelativeLayout> 

Answer 1

以下是我会做：

MainActivity.java：

public class MainActivity extends Activity implements OnClickListener { 

    ImageView lastClicked = null; 
    int width = 400; 
    int height = 320; 
    int padding = 30; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     LinearLayout l; 
     l = (LinearLayout) findViewById(R.id.linear); 
     LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(
      width, height); 
     int[] images = new int[] { R.drawable.image1, R.drawable.image2, 
        R.drawable.image3, R.drawable.image4, R.drawable.image5 }; 
     for (int i = 0; i < 5; i++) { 
      ImageView iv = new ImageView(this); 
      iv.setLayoutParams(layoutParams); 
      iv.setImageResource(images[i]); 
      iv.setPadding(padding, padding, padding, padding); 
      iv.setOnClickListener(this); 
      l.addView(iv); 
     } 
    } 

    @Override 
    public void onClick(View v) { 
     if (v instanceof ImageView) { 
      if (lastClicked != null) { 
       lastClicked.setPadding(padding, padding, padding, padding); 
       lastClicked.invalidate(); 
      } 
      v.setPadding(0, 0, 0, 0); 
      v.invalidate(); 
      lastClicked = (ImageView) v; 
     } 
    } 
}